In the greenhouse, it is necessary to adjust the environment within the facility and open the air in time. On sunny days, from 11 to 15 o'clock, the roof is covered with shading nets to cool down and cool down. At high temperature, micro-spray or inter-row watering is used to cool down. In addition, it is necessary to do the topdressing and watering work according to the weather, soil and plant growth; timely pruning and smashing, remove the lower old leaves, make the field ventilate and light, and reduce the occurrence of diseases. Do a good job in the prevention and control of diseases such as downy mildew, yellow wilt, late blight and cotton bollworm, tobacco budworm, aphid, etc., and strictly abide by the safety interval after application.
At present, the harvesting of various crops such as tomato, eggplant, cucumber, pepper, peas, and cowpea grown in spring sheds and open fields; the early harvesting of heat-resistant leafy vegetables such as leeks, coriander, auricula, and spinach Choose sunny day and early harvest in time to prevent fruit falling and miss the best product period and reduce quality. For the crops that have been growing badly, the residual plants, fallen leaves and weeds are cleaned and transported to the designated place for ozone treatment or high temperature composting. After the spring sorghum crops are pulled, the soil is highly sterilized by soil-borne diseases such as gray mold and sclerotia and serious worms, and 900 kg of crop straw such as mashed wheat straw and 40 to 80 kg of lime nitrogen are scattered per mu. Quicklime powder 100-200 kg.
Before the arrival of the rainy season, the field drains will be cleared early. After the rain, there will be no water in the fields. Inspect and repair the greenhouse wall and roof to ensure that no rain is leaked; check the storage of insulation materials such as grasshoppers and insulation to prevent losses due to water leakage.
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